Interesting. I have a HG70-HD and it hasalso has a thrust bearing on top,
but mine is requires lubing and has two Zerk fittings. I keep the bearing
well lubed using all-temp bearing grease. Never had the bearing freeze up.
Will be interesting to learn what you finalize as the culprit. By the way, I
also put a rubber cone on the mast over the bearing so water and all drain
off over the tower rather than the bearing. Standard item used on 2 in vent
pipes in homes. Keeps the water out.
Don W7WLL
-----Original Message-----
From: Gary Marks
Sent: Thursday, April 09, 2015 9:17 PM
To: Tower Talk
Subject: [TowerTalk] Mast froze in cold temps and would not turn
This past Winter, and as the year before, my mast froze in place when the
temperatures dropped below freezing. I had previously thought that the
problem was moisture getting into the rotator (Tailtwister II) and since it
had been up for 25 years, I decided last Fall to rebuild it.
This past Winter it froze and would not turn again when temps dropped below
freezing. The tower is a Hy-Gain HD-70.
Is there some area that requires lubricating between the mast and tower or
possibly the thrust bearing although it is a bronze bearing that shouldn't
need lubing. Could water be laying somewhere and not draining.
Any suggestions as to what the problem might be ?
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